本文選題：汽車發(fā)動機 + AM合金　； 參考：《熱加工工藝》2017年24期

【摘要】：通過光學(xué)顯微鏡(OM)、X射線衍射儀(XRD)、掃描電鏡(SEM)、力學(xué)性能、靜態(tài)腐蝕速率和極化曲線等測試方法,研究了合金化元素Sb對AM50+Y合金組織與性能的影響,并分析了其作用機理。結(jié)果表明,Sb元素的添加可以有效細(xì)化AM50+Y合金的晶粒;添加1%Sb的4~#合金主要由α-Mg固溶體、β-Mg_17Al_12、Al_2Y和YSb相組成;當(dāng)AM50+Y合金中Sb添加量為0.6%時可以取得最佳的常溫和150℃高溫強度和塑性結(jié)合。此外,Sb元素可以有效提高合金的沖擊韌性和硬度;AM50+Y合金中添加Sb元素,合金的靜態(tài)腐蝕速率增加,合金的腐蝕電流密度增加,耐腐蝕性能有所降低。
[Abstract]:The effect of alloying element SB on the microstructure and properties of AM50 Y alloy was studied by means of optical microscope X ray diffractometer, scanning electron microscope (SEM), mechanical properties, static corrosion rate and polarization curve.The results show that the addition of Sb can effectively refine the grain size of AM50 Y alloy, and the 4U # alloy with 1%Sb mainly consists of 偽 -Mg solid solution, 尾 -Mg17Al12 AlStack2Y and YSb phase.When the amount of SB added into AM50 Y alloy is 0.6, the optimum strength and plasticity can be obtained at room temperature and 150 鈩，

本文編號：1746935